A simple test for predicting pregnancy-induced hypertension

Area of Science:

• Obstetrics and Gynecology
• Maternal-Fetal Medicine
• Cardiovascular Physiology in Pregnancy

Background:

• Pregnancy-induced hypertension (PIH) is a significant complication of pregnancy.
• Early identification of patients at risk for PIH is crucial for timely intervention and improved maternal outcomes.
• The modified "roll-over" test is a non-invasive method to assess cardiovascular adaptation during pregnancy.

Purpose of the Study:

• To evaluate the predictive value of the modified "roll-over" test for the development of pregnancy-induced hypertension (PIH) in nulliparous patients.
• To determine the correlation between the magnitude of diastolic blood pressure increase during the roll-over test and the incidence of PIH.

Main Methods:

• One hundred thirty-one nulliparous patients at 28-34 weeks gestation without prior renal disease or hypertension were enrolled.
• Blood pressure was measured in the left lateral recumbent position and then again within 2 minutes after assuming the supine position.
• Patients were followed throughout pregnancy, labor, delivery, and postpartum to monitor for PIH development.

Main Results:

• Only 2 of 99 patients with a diastolic blood pressure increase < 15 mmHg developed PIH.
• A significant increase in PIH incidence was observed in patients with a diastolic blood pressure rise > 15 mmHg (23 of 32, P < .000000001).
• A diastolic blood pressure increase > 25 mmHg during the test was associated with a very high likelihood of developing PIH (10 of 11, P < .000000001).

Conclusions:

• The modified "roll-over" test is a highly sensitive and specific predictor of pregnancy-induced hypertension.
• The magnitude of diastolic blood pressure increase during the test is directly correlated with the risk of developing PIH.
• This test can aid in identifying high-risk pregnancies for closer monitoring and management.